Edwin cecil bolls



(No Model.)

0. ROLLS.

NUT LOOK. 4 No. 379,523. Patented Mar. 13, 1888.

UNITED. STATES PATENT OFFICE.

EDWIN CECIL ROLLS, or. GHATHAM, ONTARIO, CANADA.

NUT- LOG K.

SPECIFICATION forming part of Letters Patent No. 379,523, dated March13, 1888.

Application filed November 9, 1887. Serial No. 254,942. (No model.)

.To aZZ whom it may concern:

Be it known that I, EDWIN CECIL Home, of the town of Ohatham, in thecounty of Kent and Province of Ontario, Canada, have invented certainnew and useful Improvements in Nut-Locks; and I do hereby declare thatthe following is a full, clear, and exact description of the same.

My object is to provide a locking device for nuts used on rails havingfish-plates which bear beneath the upper flange of the rail and extendoutwardly beyond the lower flange, resting upon the ties. In this classof fish-plates a very small space is left in practice between the loweredges of the nut and the outwardlyturned flange of the plate, and it isnecessary, therefore, that the locking device used shall occupy but verylittle space at this point. I therefore arrange a locking-plate looselysupported between contiguous nuts, with extensions or projecting armsadapted to partially or wholly surround the nut, with the lowerextensions or, projecting arms turned at an angle to the body of theplate on the bottom u line ofthe opening formed for the nut, whereby aminimum amount of space is required, and at the same time a broadbearing is formed for the under face of the nut.

In the drawings, Figure 1 is an elevation showing theloclcing-plate inplace upon a rail. Fig. 2 is a cross section of same. Fig. 3 is adetached view of the plate, and Figs. 4 and 5 are niodi fications.

A is the rail, B the fishplates, O the bolts, and D the nuts. Thefish-plates as described have a bearing beneath the rail-head, and attheir lower ends bear against the ties. Upon a stud, E, projecting fromthe fish -plate or an intermediate plate, I support my locking plate Floosely by a central elongated slot, f which allows the plate to be usedon rails varying in width or in the position of the bolt relatively tothe lower bearing. the plate, by reason of its connection, being adaptedto always rest upon't-he lower bearing. Asimple holdingpin retains itfrom displacement outwardly. The plate shown is made to lock twocontiguous nuts, but may of course be arranged for one. The plate hasarms f projecting from the body at the top, and these arms may beprovided with the downward extensions f f, if desired, as shown in Fig.4., or be made without them, as in Figs. 1 and 3. These arms are adaptedto bear upon the upper side of the nuts and to keep them from turning.As this class of fish-plates occupies most of the space between therail-flange and the nuts, the lower locking flange or arm must be ofminimum width, and I providefor this by bending the lower flange, f", atright angles, or to follow the angle of the fish-plate on the line ofthe lower edge of the opening for the nut. If desired, the top and endsmay be turned up in like manner, as in Fig. 5. In this construction thelower extensions of the locking-plate may be inserted beneath the nutsof any splice without regard to the space between the nuts and theflange below, and the loose connection of the plate F with thefish-plate always insures its dropping to a steady and firm seat on thelower flange.

The space between the upper and lower arms of the locking-plate isgreater than the diameter of the nuts, so that when used upon contiguousnuts the plate allows for variation in the position of the nuts, and asthe central slot is also greater in extent than its supporting.- post itwill be seen that the plate has free vertical movement within certainlimits, and will always seat itself, whatever the position of the nut ornuts.

I claim as my invention- 1. A nut-lock consisting of a base-plateloosely supported so as to have limited verti cal movement, and providedwith lower arms extending beneath the nuts and arranged at an angle tothe body of the baseplate, substantially as described.

2. A nut-lock consisting of a base-plate having an elongated centralslot and loosely sup ported so as to have vertical movement, a post forsupporting the same, upper bearing-surfaces for the nuts, and a lowerbearing-flange therefor, bent at an angle to the body of the plate andon the line of the opening for the nut, substantially as described.

7 EDWIN CECIL ROLLS.

Witnesses:

' R. A. KELLCND,

F. R. CAMERON.

